Rotary pipe-cutting machine.



Patented Mar. 4, 1902-.

M E. Bovo.. BDTABY PIPE CUTTING MACHINE.

(Application ld Feb. 26, 1901.)

4 Shets-Shaet l.

(No odei.)

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WITNESSES' a/ mi Nonms PETERS cc.. ruomu'mo., wAsHKNcYoN, n :L

Patented Mar. 4, 1902.

ROTARY PIPE -cuTT|NG.MAcH|NE.

(Application led Feb. 26, 1901.)

(No Model.)

4 Sheetsj-Sheet 2.

Frs'. l0.

INVENTOFII n/ITNESSES'.

wlm- HTTOHNEYS 1H: uo'nms crans co. Puomnmm wAsumamn. o. c.

Nb. 694,523. Patented Mar. 4, |902.

ROTARY PIPE CUTTING MACHINE. (Appiicatiqn med Feb. 2e, um.)y

`(No Model.) 4 Sheets-v-Shge-t 3.

Frs. 6.

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m: uonms PETERS co.. wafoumo.. wwqmnmu, n. c.

lo. 694,523. Patenten Mar. 4; |902.

' I H. E. Bovo..

v ROTARY PIPE-CUTTING MACHINE.

(Application led Feb. 26, 1901.) (No Model.) 4 Sheets-Sheet 4.

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me Nonms PErERs co.. vHomLrrHo., WASHINGTON. n. c.

UNITED STATES .PATENT OFFICE.

HENRY E. BOYD, OFMCKEESFORT, PENNSYLVANIA, ASSIGNOR TO NATIONAL TUBE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

ROTARY PIPE-CUTTING MACHINE.

SPECIFICATION forming`partofvv Iletters Patent No. 694,523, dated March 4, 1902 Application filed February 26, 1901. Serial No. 48,940. (No model.)

To all whom it may concern: g

Be it known that I, HENRY E. BOYD, a'resident of McKeesport, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Rotary Pipe-Cutting Machines; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to machines for cut- Io ting off the ends of large-sized wrought-metal pipes, and has for its object a machine of this character which may be adjusted to cnt off the ends of various sizes ofpipes and which isv simple inconstruction and powerful and i5 efficient in operation.

In the manufacture of wrought-metal pipes of large size, such as'are used for water and gas mains, a plate of suitable width and thick-yV ness has its edges scarfed and is then bent zo into tubular form with the scarfed edges overlapping, after which it is "heated until the edges are at a Welding heat and then passed overl aball between suitable rolls, whereby the overlapped edges are welded together. z5 This operation Aleaves the ends of the pipe ragged, and generally theweldedseam is not perfect atv the extreme ends. These imperfeet ends must be removed. Heretofore it has been the custom, especially with very 3o large sized pipes having thick walls, to cut olf the ends by mounting the .pipe in speciallyconstructed lathes and then rotating the same and bringing an ordinary 'cutting-off tool mounted in a slide-rest incontact therewith,

which gradually and progressively cuts off the end of the pipe. This, of course; isa slow and expensive procedure,`al though'very effectivefor the intended purpose; It has been attempted to cut off these crop ends of the 4o pipe by means of metal-shearing machines;

but the machines'constructed prior to my invention were liable to mutilate the ends of the pipe, reduce the diameter, and form beveled edges thereon.

The object of my invention is to provide a machine for this purpose which is particularly adapted for very large sized pipes, which is adjustable within limits for various-sized pipes, and which will not mutilate the ends 5ov of the pipe, but will leave the same perfectly circular' and of the same diameter as the body of the pipe and will form square end edges thereon.

To 'these ends it comprises a rotating barrel on which the shearing-disks are mounted 55.

.eccentrically, so that when the barrel is ro- Vfrom'the other disks in order to permit the insertion of the'pi'pe end between the same andbe cutio thereby, which means is opera- 7o tive at allV positions of the rotating barrel and which moves the disks toward and from each other in a straight line.

The invention-further comprises certain details of mechanism, as will hereinafter be l more fully described and claimed.

In the accompanying drawings, Figure lis a side elevation ofthe machine'. Fig. 2 is a plan view of the same. Eig., 3 is a rear end elevation.- Fig. et is a front endelevation. 8o Fig. 5 is a longitudinal vertical section showing the manner of'mounti'ng the barrel. Fig.

6 is a vertical longitudinal sectionV through the barrel. Fig. 7 is ahorizontal longitudinal section of the same. Fig. b is a transverse section through the barrel, showing the rear head in elevation. Figs. 9 and 10 are sectional detail elevations of. the bearingframes in the front and rear heads, respectively, with the adjusting screws and nuts in 9o place therein. Fig. l1 is a front elevation of the barrel. Fig. 12 is a plan view of the same. Fig. 13 is a front elevation of the slide or carriage carrying the movable cutter. Fig. 14C is a bottom plan view of the same." Fig.

IOO

On the forward end of this bed-plate is pro'- vided the clamp 2 for holding the pipe 3, whose end is to be cut o. This clamp is provided with two jaws 4 4 on one side and a single jaw 5 on the opposite side, these jaws being provided with dovetailed bases 6, moving in undercut ways in the plate 7, which plate in turn is mounted to move transversely in undercut ways 8 in the plate 9, suitably secured to the bed-plate 1.

10 represents screws for moving the jaws 4 and 5 forward and back, and these jaws grasp the pipe in the usual way and hold it firmly in position while the end thereof is being cut olf. Inasmuch, however, as this clamp is not new and is not claimed herein, a more detailed description thereof is not deemed necessary. Sufce it to say that the clamp is so positioned with reference to the other parts of the machine that the axis of the pipe whose end is to be cut off will be in line with the axis of the rotating barrel, hereinafter to be described.

Suitably secured to or cast with the bedplate 1, near its middle portion, are two standards 11, provided with semicircular bearingsurfaces, which serve as bearings for the rorating barrel 12. To the upper portions of the standards 11 semicircular bands or caps 13 are suitably secured, as by means of the bolts 14, which bands fit over the barrel 12, so that the barrel is confined between said bands and the bearing-faces on the standards 11, but being mounted therein so as to be freely rotatable. The barrel 12 is provided at its forward and rear ends with collars 15, which bear against the end faces of the standards 11 and caps 13 and prevent endwise movement of said barrel. The barrel is also provided at its middle portion with the peripheral spur-gear 16, which meshes with a spur-pinion 17 on the shaft 18, on which shaft 18 is also secured the spurgear 19, which meshes with a spur-pinion 20 011 the shaft 21. To this shaft is also secured a spurgear 22, which meshes with a spur-pinion 23 on the main drive-shaft 24, said drive-shaft being provided with the pulleys 25, which are adapted to receive a belt from any suitable source of power and by means of which motion is communicated to the machine. The shafts 18, 21, and 24 are mounted in bearings in the housings or brackets 26, bolted to the sides of the standards 11. By means of the gearing described a positive and strong rotary motion is given to the barrel 12, and this gearing is compact and is mounted directly on the frame of the machine. It will be observed that the speed of rotation is being constantly reduced in that a spur-pinion is always in mesh with a comparatively large spur-gear, the result being that the barrel will rotate at a comparatively slow speed with a corresponding increase of power.

On the rear end of the bed-plate 1 are secured suitable frames or brackets 27, which support a hydraulic cylinder 28, the pistonrod of which carries a cone 29, which bears against the roller on the rear ends of the levers 31 for actuating the movable cuttingdisk, as will more fully hereinafter appear. The forward end of the cone 29 is provided with a cylindrical extension 32, which projects into a central opening in the hub 33 on the rear end of the barrel 12, whereby said cone 29 is always centered with reference to the barrel and held firmly in a horizontal position. The water connections to the cylinder 28 is through the pipe 34, which is provided with a suitable valve 35 in position to be operated by the attendant of the machine. The cone 29 is provided with hooks 36, to which are attached one end of the liexible cables 37, which pass over the grooved sheaves 38, suitably journaled on the sides of the frames 27, said cables having secured to their opposite ends the counterbalancing-weights 39, which serve to withdraw the cone 29 after it has been projected by hyd raulic pressure in the cylinder 2S.

Firmly secured in the barrel, as by means of the tap-bolts 40, are the front head 41 and the rear head 42, each of said heads being provided with suitable openings for receiving the bearings for the rotatable shaft 43, which carries at its forward end the stationary cutting disk or anvil 44, and for the passage of the levers 31, which have mounted between their rear ends the roller 30, heretofore mentioned, and which are forked at their front ends and pivotally connected to the links 45, the opposite end of said links being pivoted to a slide or carriage 46, carrying the movable cutting-disk 47, as will hereinafter more fully appear.

The front head 41 is cut away, as at 48, to permit the passage to the shaft 43 and is pro vided with the ways or guides 49, in which is mounted the bearing-frame 50, said frame being provided with an opening 51 for receiving the bearings 52 and 53 for the shaft 43. This frame is also provided on each side of the opening 5l with the vertical holes 54, said holes being counterbored at their lower ends, as shown at 55, for receiving the nuts or bushings 56, which nuts or bushings bear with their upper ends against the end walls of the counterbored openings 55 and are internally screw-threaded for receiving the screws 5S, by means of which the frame 50 and bearings for the shaft 43 may be adjusted toward and from the center of the head 41. The screws 58 are journaled at their lower ends in bearings 59 in the head 41 and have their upper ends journaled in bearings 60 in said head, said screws being thus prevented from endwise movement. The face-plate 61 is suitably secured to the front face of the head 41. To the lower end of each of the screws 58 is secured a spur-gear 62, said spurgears meshing with a spur-gear 63 on the upper end of the stub-shaft 64, suitably mounted in the head 41 and provided at its lower end with the worm-wheel 65, which meshes with ICO IIO

ings 68 `inthe headand which is provided at its forward end with a squared or keyedv portion for receiving the crank' 69, by means of which saidworm-shaft may be rotated and through the worm-wheel 65 and spur-gears k63 and62 communicates' motion to the screws 58, which screws working in the bushings or nuts 56 in the bearing frame 50 will' elevate or lower the same, as may be desired.

The head 41 is cut away on'it's two opposite sides, as at 70, providing openings for the passage of the levers 3l, and formed in said headI in the side walls of the openings 70 are the circular seats 7l, which are adapted to receive the bosses or trunnions 72 on the inner sides of the levers 31,- thereby providing pivotal bearings for said levers. The levers are provided on their outer facesY opposite the bosses or trunnions 72 with the convex portions 7 3, which bear against the inner face of t the barrel 12, thereby preventing displacein the face-plate 61.

ment of said levers and -providinga bearing which is'fairly free from friction. The seats 7l are formed mostly inthe head 41, but' are formed partiallyby concave depressions 74 The face-plate 6l is provided with a suitable opening75, whichjcor-v responds lto the opening48 in the head 41,' and with the side openings 76, through'which the levers 3l pass, and -also with the periph`' eral notch 77, which ts'overthe bearing' 68,

' vided with the opening 82 for receiving theV in which the worm-shaft 67 is mounted.

l The rear head 42 is provided'with suitable ways or guides 80, in whichthe bearing-frame 8l is mounted; said bearing-traine being prosaid frame also being provided on,V each' side screws 87. These screws are suitably mounted gear 91 on the upper end of the'stub-shaft' 92,

in the lower bearings-88 andupper bearings`89 Y in the head 42 to preventendwise displacement thereof and have securedto their lower-ends the spur-gears 90, which mesh with the spur'-v suitably mounted in the head 42, and providedI at itsf lower v end with the worm wheel 93,-

which meshes witha worm 940m i lthe worum` shaft 67, above referred to. -Inasiriu'ch as thelv 'f' thrust on the stationary shearing-disk 44 durvent this upward movementf ing the operation'of Vthemachine i's downward, there isa tendency for the rear end of" the shaft 43 to move upward, and the adjusting'meansfmust be so constructed as to pre- Consequently the holes in the bearing-frame 81 are counterbored at their upper ends, as at 85,' and the'nuts'86 bear'against the end walls of said counterbored portions and prevent upward movement 'of thebearing-frame. In the case of the front bearing frame, however, the thrust is always downward, and consequently theholes in said frame are counterbored at their"lower ends, as at l55, heretofore de'- scribed, in which lower vportion the nuts 56 bear and prevent downward movement of said bearing-frame. By means of the crank 69, worm-shaft 67,*and connecting gearing the adj usting-screws both. in the front and rear heads are simultaneously actuated, so as to secure an adjustment of the shaft 43`in a parallelfline toward and from the axis of the barrel 12. The rear head 42 is provided with suitable openings A95, through which pass the rear ends of the levers 3l.

The forward end of the barrel12 is pro vided with the radial projection A96, which iis provided with suitable ways or guides 97 for receiving the` llanges `98'of the slide or 'care riage 46,in whichis mounted'themovablecut'- f ter 47, said carriage being prevented from disl placement by the platesv99, secured to the' frontface of the projection 96.v The slide or carriage 46 `is provided with the side studs or trunnion's 100, which'receive the outer ends of the links 45,`the`inner ends of which are 'piv-y oted to Athe-forked ends of the levers 3l, as

heretofore described, so that when 'said le versV areactuated by means of the cone 29 the said slide or carriage 46 is movedy toward and from the' axis of the barrel ,12, therebycarrying the 'movablecutter 47 toward -and fromthe stationary cutter or anvil 44.`

The 'slide or carriage l4 6 isppro'vided with'` ways or guides 101,'in which ways 'or'guides ing pivotally mounted at one endand pro#-4 vided'ajt its opposite end w'i'th the'open hole 105, thereby providing a 'hoolz lwhich takes V overA the bolt 106, whereby said fplate is held.

infposition, but so 'that itjcanbe readily swung Sidewise out fof place.l Passing `thrro`ughlthis" plate are screws 107, which bear against-theV los To Ythe upper end ofthe Vslide or car-1,'

upper endsof the frame '102 andldeterminef the position thereof,` which vadj us'tm'ent of thef fra'meis necessary in order to adapt the 'machine to out pipes of different sizes." The adwith various-length upward` projections 1,08

jllstment-of the frame 102 by means o'f the"` screws 107 is limited, and consequently/I intend"to`-use changeable frames A'102, provided for'certain limits in the sizesfofk the pipes, f

theadjus'tment for sizes of pipes'within such `I Y limits, however, to be secured by means lof I The frame 102 iscut away, as at 109,thereby` :providing-the two legs, 110, between which legs are mounted the bearings .111, which. bearings have screw-tapped holes in theirupper faces for receiving the screws 112, which pass through openings in the frame 102, by means of which screws the bearings 111 are held in place. These bearings are provided with the unbroken semicircular outer bearing-faces 114, but are grooved out on their inner faces, thereby forming the chambers 115 for receiving waste or other material to aid in lubricating the arbor` of the movable cutter, it being understood, of course, that during the cutting operation the thrust on the movable cutter is outward against the bearing-faces 114. The bolts 112 have each an opening 116 passing therethrough, which opening communicates with an opening 117 in the bearing 111, and which is adapted to receive at its upper end the screw-plug 11S for closing the same. Through these openings oil is introduced into the bearings 111.

The movable cutter 47 is secured to the arbor 120 by means of sleeves 121, said sleeves being provided with ianges 122, which bear against t-he sides of the cutter 47 and are clamped between the head 123 on one end of the arbor 120 and the flanged nut 124 on the opposite end of said arbor. The arbor 120, sleeves 121, and shearing-disk 47 rotate as a single piece in the bearings 111.

The operation of the machine is as follows: The pipe Whose end is to be cut o is clamped in the vise 2 in such position that its axis is coincident With the axis of the barrel 12, and the end of said pipe is introduced between the cutter-disks 44 and 47, the cutter-disk 47 being in its outward position for this purpose. The shaft 43 has been moved to its proper position by means of the Worm-shaft 67 and connecting mechanism, so that the cutter-disk 44 will bear during the -rotation of the barrel 12 upon the inner surface of the pipe 3, and when a different-sized pipe is to be cut 0E it will be necessary, through the crank 69, to change the position of the shaft 43. So, too, the position of the movable cutter 47 has been iixed by properly adjusting the screws 107, bearing on the upper ends of the frames 102, and, if necessary, replacing said frame by one having a dierent-length upper end projections 108. The machine being properly adjusted and the barrel put in rotation and the pipe end being entered between the shearing-disks 44 and 47, water is admitted to the hydraulic cylinder 2S, thereby forcing the cone 29 under the roller 30 at the rear end of levers 31, whereby the front end of said levers are depressed, drawing down on the links 45 and Through said links moving the slide or carriage 46 and the movable cutter 47 inward against the outer face of the pipe, it being understood, of course, that the barrel 12 is rotated constantly, and by reason of the part 29 being a cone this movement can be imparted to the movable cutter 47 at any position of the rotary movement of the barrel. The cutter 47 is moved inward in a straight line and being pressed against the outer surface of the pipe shears down into the same on a straight line, and

this shearing continues around the pipe as the barrel 12 rotates until the entire circumference of the pipe has been traversed, it requiring slightly more than one rotation of the barrel 12 to completely sever the end of the pipe. Hydraulic pressure is then released in the cylinder 28, when the counterbalancing-Weights 39 will move the cone 29 backward, thereby permitting the roller 30 and overweighted rear ends of the levers 31 to move the carriage or slide 46, with the movable cutter, outward to permit the insertion of another pipe end, when the operation is re peated.

The machine shown and described is very powerful, the mechanism is compact and as simple as possible, and the operation thereof highly eicient.

That I claim as my invention, and desire to secure by Letters Patent, is-

1. In a pipe-cutting machine, the combination of a rotatable barrel, a stationary disk mountedV thereon, a movable cutting-disk also mounted thereon, means mounted in the barrel for moving the movable disk toward and from the stationary disk in a straight line, and mechanism for actuating said means.

2. In a pipe-cutting machine, the combination of a rotatable barrel, a stationary disk mounted thereon, means for adjusting said stationary disk toward and from the axis of the barrel, a movable cutting-disk mounted on the barrel, means mounted in the barrel for moving the movable disk toward and from the stationary disk, and mechanism for actuating said means.

3. In a pipe-cutting machine, the combinanation of a rotatable barrel, a stationary disk mounted thereon, means for adjusting said disk toward and from the axis of the barrel, a movable cutting-disk, means mounted in the barrel for moving said disk toward and from the stationary disk,said disk being adj ustably connected to said moving means, and mechanism for actuating said moving means.

4. In a pipe-cutting machine, the combination of a rotatable barrel, astationary disk mounted thereon, a movable cutting-disk, means mounted in the barrel for moving the said disk toward and from the stationary disk, means for adjustably connecting said movable disk to the moving means, and mechanism for actuating said moving means.

5. In a pipe-cutting machine, the combination of a rotatable barrel, a stationary disk mounted thereon, a radial guideway on said barrel,a slide or carriage moving in said guide, a cutting-disk mounted on said slide, means mounted in the barrel for moving the slide, and mechanism for actuating said moving means.

6. In a pipe-cutting machine, the combination of a rotatable barrel, a stationary disk mounted thereon, a radial guide on said barrel, a slide or carriage moving in said guide, a cutting-disk mounted on said slide, levers connected to said slide and mounted in the IIO ,5 tionary disk, a movable'cutting-disk,and

barrel, and mechanism for actuating said levers.

7. In a pipe-cutting machine, the combination of a rotatable barrel, a stationary disk mounted thereon, means for adjusting said disk toward and from the axis of the barrel, a radial guide on saidV barrel, a slide moving in said guide, said slidecarrying a cutting-disk, levers connected to said slide and mounted in the barrel, and mechanism for actuating said levers. y Y v 8. In a pipe-cutting machine, the combination of a rotatable barrel, a stationary diskmounted-thereon, means for adjusting said disk toward and from the axis of the barrel, a radial guide on said barrel, a slidev moving in said guide, a cutting-disk adjustably mount-Y ed on saidl slide, and means mountedin the barrel for moving the Vslide toward and from the stationary disk. f

9. In a pipe-cutting machine, the combination of a rotatable barrel, a rotatable shaft mounted therein, said shaft carrying a sta-` tionary disk at its forward end adapted to bear on theA inside of the pipe, a movable cutting- A disk, and mechanism for moving the sametoward and from the stationary disk.

10. In a pipe-cutting machine, the combi*- nation of a rotatable 'barrel, a rotatable shaft mounted therein, said shaftcarrying a disk at its forward end, means for adjusting said tionary disk.

shaft toward and from the axis of the barrel,- a movable cutting-diskalso mounted 'on the barrel, and means mounted in the barrel for moving said disk toward and'from the 'sta-v 11. In a pipe-cutting machine, the combi-l nation of a rotatable barrel provided with heads having ways therein, bearings adjustably mounted in said ways, a shaft mounted in said bearings and carrying a stationary disk, a movable cutting-disk,'a'nd mechanism for moving the same toward and from the stationary disk.

12. In a pipe-cutting machine, lthe combi-Y'y nation of a rotatable barrel provided with heads having radialways therein, bearings in saidways, mechanism for simultaneously adjusting the bearings in both heads,a shaft mounted in said bearings and carrying a stamechanism for` moving it toward'and from `the stationary disk.

13. In-a pipe-cutting machine, the combi= nation of aV rotatable barrel provided with heads having radial ways therein,l avshaft mounted in bearings and carrying a'stationary disk, screws for moving saidv bearings 'toward and'from the axis of the disk, a wormshaft and connecting mechanism` to y"said screws whereby the bearings are simultanej ously adjusted.

14. In a pipe-cutting machine, the combination of a rotatable barrel having heads pr.

vided with'ways, bearings moving in said ways, a shaft mounted in sai/d bearings and carrying a stationary disk, a-nut bearing on the upper face of the rear bearing, a nut bearing on thelower face of the forward'bearing,

screws working in said nuts, and means for simultaneously operating said screws. y15. In a pipe-cutting machine,-the combination of a rotatable barrel having heads therein, a shaft mounted in said heads and carrying a stationary disk, levers fulcrumed,

in the front head, a movable cutting-disk and connections between the same and the front end of said levers, and means adapted to bear .against the rear end of said levers to actuate the same.-

1'6. In a pipe-cutting machine, the combinationL of a rotatable barrel Ahaving heads therein, of a shaft mounted in said heads and vcarrying a stationary disk, of levers provided A mounted thereon, levers mounted in said barrel and connected to said vmovable disk, and means concentric with the barrel and adapted to bear. against the. rear end' of the'levers to actuate the same.A

18. In a pipe-cutting machine, the combination of a rotatable barrel, a stationary disk 'mounted thereon, a movable cutting-disk, le-g'A vers mounted in said barrel and connected to said movable disk, a cone concentric with thebarrel and adapted to bear against vthe rear end of said levers,and a power-cylinder foriactuating saidcone. v19. In a pipe-cutting machine,'the nation of. a rotatable barrel, astationary disk mounted thereon, a movable cutting-disk, le-

IOO

vers mounted in the barrel and'connected-to IIO - In test'monytwhereofI, the said HENRY E. v

set my hand.

BOYD, have 'hereunto HENRY' n'Bo'Yp.

Witnesses: v 1

ROBERTO. -TOTTEN,=

F. W'. WINTER. 

